Raung volcano (East Java, Indonesia): field report - ash emissions until 14 Aug, activity ceases
Sunday Aug 16, 2015 10:24 AM | BY: T
Raung's summit caldera on 14 Aug 2015Activity has strongly decreased at the volcano. When we visited Raung during 14-15 August, we observed pulsating, often near-continous ash emissions that produced plumes of several hundred meters. They often consisted of dark jets of ash, presumably from phreatomagmatic activity inside the conduit.
This activity originated from the lower, southwestern vent of the large, double-crater new cinder cone in the eastern part of the caldera. The larger vent to the NE was almost entirely inactive, except two small, very weakly active effusive vents on its inner walls. Occasionally, glowing lava blocks were pushed out from these.
The recent lava flow was no longer active. Like a giant pancake, it has completely covered the caldera floor surrounding the large cinder cone.
The explosive ash emissions described above stopped during the afternoon of 14 Aug and so far, it seems have not resumed. It appears likely that the eruption has more or less come to an end.
See also: Pictures from the expedition and the visit to the crater.
Wednesday, Aug 12, 2015
Small ash emissions continue. This morning, a plume of ash approx. 500 m high drifted 15 km to the west of the volcano. [more]
Tuesday, Aug 11, 2015
Activity has decreased at the volcano. During the past days, the ash plume was much lower and only extended several tens of kilometers in southerly directions. ... [more]
Saturday, Aug 08, 2015
Intense ash emissions continue to produce a plume that stretches hundreds of kilometers to the SW. Many flights to and from Bali were canceled or delayed today again. ... [more]
Raung volcano (East Java, Indonesia): ash plume results in cancellations of flights to and from Bali
Friday, Aug 07, 2015
Intense ash emissions and northwesterly winds have repeatedly forced to close Bali's Denpasar International Airport (DPS) during the past days, resulting in many flight cancellations. ... [more]
Tuesday, Aug 04, 2015
The eruption at the volcano remains very intense and might have increased during the past days. ... [more]